You could do the top in a square shape, the middle in a triangle and the bottom in a circle as well. Or move around the positions as another person so rightly suggested. It's a fun idea. You could do a sepia tone on them as well, or even do different colors. Go crazy. It's fun and sophisticated in its simplicity. Photoshop, Freehand and other programs were made to have fun with! ( OK, it's been awhile since I've done any real creative layout. Kinda miss it)